Semiconductor laser device
View Patent ↗A semiconductor laser device according to the present invention includes a first lead portion having a mounting portion on which a semiconductor laser chip is mounted, a second lead portion for an electrode, and a resin portion for fixing the first and second lead portions. The second lead portion is provided with an engagement portion engaging with the resin portion in the longitudinal direction of the second lead portion, and extends straight within the resin portion.
1. A semiconductor laser device, comprising:
a first lead portion having a mounting portion on which a semiconductor laser chip is mounted;
a second lead portion for an electrode;
a third lead portion having a first side portion and a second side portion, the first side portion disposed to one side of the second lead portion and the second side portion disposed to another side of the second lead portion; and
a resin portion fixing said first, second and third lead portions;
said second lead portion being provided with an engagement portion engaging with said resin portion in a longitudinal direction of said second lead portion, and extending straight within said resin portion.
2. The semiconductor laser device according to claim 1 , wherein said engagement portion includes a wide portion formed by locally expanding a width of said second lead portion within said resin portion.
3. The semiconductor laser device according to claim 1 , wherein:
said third lead portion extends from said resin portion on a same side as said second lead portion.
4. The semiconductor laser device according to claim 1 , wherein an outer circumference of said resin portion has a circular shape with said semiconductor laser chip arranged at a center.
5. The semiconductor laser device according to claim 1 , wherein said resin portion has a window portion through which light emitted from said semiconductor laser chip passes.
6. The semiconductor laser device according to claim 1 , wherein an outer circumference of said resin portion is provided with a cut portion for stopping rotation.
7. The semiconductor laser device according to claim 1 , wherein said mounting portion in said first lead portion is made wider than said first lead portion excluding said mounting portion.
8. A semiconductor laser device, comprising:
a first lead portion having a mounting portion, on which a semiconductor laser chip is mounted, and a heat radiation portion extending from said mounting portion;
a second lead portion for an electrode, the second lead portion having a first side portion disposed to one side of said heat radiation portion and a second side portion disposed to another side of said heat radiation portion;
a third lead portion for heat radiation having a first side portion disposed to one side of said second lead portion and a second side portion disposed to another side of said second lead portion; and
a resin portion fixing said first, second and third lead portions;
wherein said second and third lead portions extend from said resin portion on a same side of the resin portion.